noun
Technical term in computing for a system of symbols and rules used to represent information, such as character encodings or data formats.
このソフトウェアは複数の符号体系に対応している。
This software supports multiple coding schemes.
符号化 is the process of encoding, while 符号体系 refers to the system or scheme itself.
Compound of 符号 (code, sign) and 体系 (system). The exact historical derivation is uncertain, but the term is a straightforward technical compound.